The St.Lawrence and（）together form an important transportation network for eastern Canada.

单项选择题The longest river in Canada is（）

A.the Mackenzie
B.the St.Lawrence
C.the Severn
D.the Yukon

单项选择题Canada.s largest city is（）

A.Montreal
B.Toronto
C.Ottawa
D.Vancouver

单项选择题Nearly（）of the land in Canada has no permanent population.

A.half
B.two-thirds
C.89%
D.95%

单项选择题Canada is bounded on the east by（）

A.the Pacific Ocean
B.the Atlantic Ocean
C.the Indian Ocean
D.the Arctic Ocean

单项选择题Canada is located in （）

A.the Southern Hemisphere
B.The Northern Hemisphere
C.the Western Hemisphere
D.The Eastern Hemisphere